Home / 20,459.28-30,688.02-6,418.98

Finding the Fourth Proportional to 20,459.28, 30,688.02 and 6,418.98

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Solution

The fourth proportional to 20,459.28, 30,688.02 and 6,418.98 is: 9,628.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.28 : 30,688.02 = 6,418.98 : x
  2. Step 2: Convert to fraction form
    20,459.28/30,688.02 = 6,418.98/x
  3. Step 3: Cross multiply
    20,459.28x = 30,688.02 × 6,418.98
  4. Step 4: Simplify right side
    20,459.28x = 196,985,786.62
  5. Step 5: Solve for x
    x = 196,985,786.62/20,459.28
  6. Step 6: Final answer
    x = 9,628.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.